61 lines
2.4 KiB
C
Executable File
61 lines
2.4 KiB
C
Executable File
/*
|
|
* Copyright (c) 2005, Hervé Drolon, FreeImage Team
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifdef _WIN32
|
|
#include <windows.h>
|
|
#else
|
|
#include <sys/time.h>
|
|
#include <sys/resource.h>
|
|
#include <sys/times.h>
|
|
#endif /* _WIN32 */
|
|
#include "opj_includes.h"
|
|
|
|
double opj_clock(void) {
|
|
#ifdef _WIN32
|
|
/* _WIN32: use QueryPerformance (very accurate) */
|
|
LARGE_INTEGER freq , t ;
|
|
/* freq is the clock speed of the CPU */
|
|
QueryPerformanceFrequency(&freq) ;
|
|
/* cout << "freq = " << ((double) freq.QuadPart) << endl; */
|
|
/* t is the high resolution performance counter (see MSDN) */
|
|
QueryPerformanceCounter ( & t ) ;
|
|
return ( t.QuadPart /(double) freq.QuadPart ) ;
|
|
#else
|
|
/* Unix or Linux: use resource usage */
|
|
struct rusage t;
|
|
double procTime;
|
|
/* (1) Get the rusage data structure at this moment (man getrusage) */
|
|
/// STUB ///
|
|
/// getrusage(0,&t);
|
|
/* (2) What is the elapsed time ? - CPU time = User time + System time */
|
|
/* (2a) Get the seconds */
|
|
procTime = t.ru_utime.tv_sec + t.ru_stime.tv_sec;
|
|
/* (2b) More precisely! Get the microseconds part ! */
|
|
return ( procTime + (t.ru_utime.tv_usec + t.ru_stime.tv_usec) * 1e-6 ) ;
|
|
#endif
|
|
}
|
|
|